Lockheed to Idle 2,400 Workers, and Aerospace Corp. Is Hard Hit

The Pentagon's largest contractors dialed back plans for mass furloughs after much of the Defense Department's own idled staff was recalled, though thousands of workers have been sent home as companies remain exposed to the partial shutdown of other government agencies.

Among the hardest hit is Aerospace Corp., which provides specialist support to national-security space programs. The El Segundo, Calif.-based firm revealed Monday that...